Fan



FIG. 1 is a perspective view of a new fan, taken from the top front right;

FIG. 2 is perspective view thereof, taken from the top front left;

FIG. 3 is a perspective view thereof, taken from the bottom front right;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a front elevation view thereof; and,

FIG. 7 is a left side elevation view thereof. 

CLAIM The ornamental design for a fan, as shown and described. 